FM-TX - FM transmits your music or audio over the strongest FM frequenct available. The FM Transmitter will send the clearest signal at the push of a button with no special installation or wiring, so you get stereo sound for your playlist or movies.

IR-TX - This unit consists of an infrared receiver and infrared transmitter. It is ideal for receiving sound within the car. The transmitter can be quickly connected to any IR devices such as an IR headphone. By sending out infrared light signals from the transmitter tot he IR headphones, you can listen to music cordlessly.